MESON Chess Problem Database

Problem Display
PID: 107309 (2R5/1p1Q1p2/2NK1p1r/4pPpN/4k3/2ppp1R1/3b4/6B1 w - - 0 1)

Zilahi, Zoltan

BTSB, 1953

2R5/1p1Q1p2/2NK1p1r/4pPpN/4k3/2ppp1R1/3b4/6B1

#2

8 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rxe3#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Rc4#
        • 2.Qa4#
      • 1...b5!
    • 1.Sxe5?
      • threat
        • 2.Rg4#
        • 2.Rc4#
      • 1...Kd4
        • 2.Rg4#
        • 2.Rc4#
        • 2.Qa4#
      • 1...b5
        • 2.Rg4#
      • 1...e2
        • 2.Rc4#
      • 1...g4
        • 2.Rxg4#
        • 2.Rc4#
      • 1...fxe5+!
    • 1.Sa7?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Qa4#
      • 1...b5!
    • 1.Se7?
      • threat
        • 2.Rc4#
        • 2.Qa4#
      • 1...Kd4
        • 2.Qa4#
      • 1...c2
        • 2.Rc4#
      • 1...b5!
    • 1.Sb8?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Qa4#
      • 1...b5!
    • 1.Sd8?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Qa4#
      • 1...b5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rg4#
      • 1...Kxd4
        • 2.Qa4#
      • 1...exd4
        • 2.Re8#
      • 1...e2
        • 2.Qxb7#
      • 1...g4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::R1(B),XP(d)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(H)
      • Refutation
        • P(j);
    • Try
      • S(E);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(j);::R(B)
        • P(d);::R(H)
      • Refutation
        • P(h);CHECK,XS(E)
    • Try
      • S(E);
      • Threat
        • R(H)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR(G)
      • Refutation
        • P(j);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR(G)
        • P(b);::R(H)
      • Refutation
        • P(j);
    • Try
      • S(E);
      • Threat
        • R(H)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR(G)
      • Refutation
        • P(j);
    • Try
      • S(E);
      • Threat
        • R(H)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(d)::QAR(G)
      • Refutation
        • P(j);
  • Actual
    • S(E);
    • Threat
      • R(B)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(d),XS(E)::QAR(G)
      • P(f);OGATEB,SBLOCK,XS(E)::R(H)
      • P(d);::QAB(G),XP(j)
      • P(g);::R(B),XP(g)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).